I'm trying to construct an array of Dicts (Dict{Symbol,Any}, to be used as
initial values for MCMC chains by the Mamba package). The following problem
doesn't appear to have anything to do with Mamba, though.
julia> using Distributions
The following works, i.e. autoamatic conversion works: rand(Binomial(50,
0.75)) will returns an Int64 and 34.3 is a Float64
julia> inits = [[:k => rand(Binomial(50, 0.75)), :j => 34.3] for i in 1:2]
2-element Array{Dict{Symbol,Any},1}:
[:j=>34.3,:k=>39]
[:j=>34.3,:k=>42]
This also works:
julia> k= rand(Binomial(50, 0.75))
42
julia> typeof(k)
Int64
julia> inits = [[:k => k, :j => 34.3]]
1-element Array{Dict{Symbol,Any},1}:
[:j=>34.3,:k=>42]
But this doesn't, i.e. automatic type conversion doesn't work:
julia> inits = [[:k => k, :j => 34.3] for i in 1:nchains]
3-element Array{Union(Dict{Symbol,Float64},Dict{Symbol,Any}),1}:
[:j=>34.3,:k=>42]
[:j=>34.3,:k=>42]
[:j=>34.3,:k=>42]
If I specify the type, it works:
julia> inits = [(Symbol => Any)[:k => k, :j => 34.3] for i in 1:nchains]
I'm using:
julia> versioninfo()
Julia Version 0.3.3
Commit b24213b* (2014-11-23 20:19 UTC)
Platform Info:
System: Darwin (x86_64-apple-darwin13.3.0)
CPU: Intel(R) Core(TM) i7-4558U CPU @ 2.80GHz
WORD_SIZE: 64
BLAS: libopenblas (DYNAMIC_ARCH NO_AFFINITY Haswell)
LAPACK: libopenblas
LIBM: libopenlibm
LLVM: libLLVM-3.3
Am I doing anything wrong?
Cheers,
Andrew
